Method for killing insects and/or fungi with electro-mechanical ultrasonic nebulizer and composition for said method

Abstract

A novel method for killing insects and/or fungi comprising vaporizing in air an insecticidal and/or fungicidal agent with an electro-mechanical ultrasonic nebulizer and an insecticidal and/or fungicidal composition to be employed in this method are disclosed.

What we claim are: 
     
       1. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition selected from the group consisting of the following solutions, and wherein each solution contains an agent and a solvent, said agent being about 2 to 20% by weight of said composition:   a solution of allethrin in n-pentadecane;   a solution of d-cis, trans-allethrin in n-hexadecane;   a solution of resmethrin in n-hexadecane;   a solution of DDVP in n-tetradecane and isopropyl alcohol;   a solution of d-cis, trans-resmethrin in n-hexadecane;   a solution of d-cis, trans-allethrin and d-cis, trans-resmethrin in n-dodecane;   a solution of 0.3% oil suspension of DDVP in kerosene;   and a solution of 0.5% oil suspension of diazinon in kerosene; wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating in a frequency range of between 800,000 and 1,700,000 Hz to effect atomization and vaporization in air of a concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.     
     
     
       2. A method according to claim 1 wherein said frequency range is about 1,300,000 Hz. 
     
     
       3. A method according to claim 1 wherein said frequency range is about 1,150,000 Hz. 
     
     
       4. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition selected from the group consisting of the following solutions, and wherein each solution contains an agent and a solvent of:   a solution of allethrin (20%) in n-pentadecane (80%);   a solution of d-cis, trans-allethrin (10%) in n-hexadecane (90%);   a solution of resmethrin (5%) in n-hexadecane (95%);   a solution of DDVP (5%) in n-tetradecane (90%) and isopropyl alcohol (5%);   a solution of d-cis, trans-resmethrin (5%) in n-hexadecane (95%);   a solution of d-cis, trans-allethrin (5%) and d-cis, transresmethrin (5%) in n-dodecane (90%);   a solution of 0.3% oil suspension of DDVP in kerosene;   and a solution of 0.5% oil suspension of diazinon in kerosene; wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating in a frequency range of between 800,000 and 1,700,000 Hz to effect atomization and vaporization in air of a uniform concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.     
     
     
       5. A method according to claim 4 wherein said frequency range is about 1,300,000 Hz. 
     
     
       6. A method according to claim 4 wherein said frequency range is about 1,150,000 Hz. 
     
     
       7. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition selected from the group consisting of the following solutions, and wherein each solution contains an agent, a surfactant containing anion and nonion surfactants, such as metal salts of alkyl benzene sulfonic acids, sorbitan higher fatty acid esters, and polyoxyethylene alkyl esters, and water as a solvent, said agent being about 2 to 20% by weight of said composition:   a solution of fenitrothion;   a solution of ciafos;   a solution of diazinon;   a solution of DDVP;   a solution of BPMC;   and a solution of carbaryl; wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating in a frequency range of between 800,000 and 1,700,000 Hz to effect atomization and vaporization in air of a uniform concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.     
     
     
       8. A method according to claim 7 wherein said frequency range is about 1,700,000 Hz. 
     
     
       9. A method according to claim 7 wherein said frequency range is about 1,150,000 Hz. 
     
     
       10. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition selected from the group consisting of the following solutions, and wherein each solution contains an agent, a surfactant (1%) containing anion and nonion surfactants, such as metal salts of alkyl benzene sulfonic acids, sorbitan higher fatty acid esters, and polyoxyethylene alkyl esters, and water as a solvent:   a solvent of fenitrothion (1%);   a solution of ciafos (1%);   a solution of diazinon (1%);   a solution of DDVP (1%);   a solution of BPMC (1%);   and a solution of carbaryl (1%); and wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating in a frequency range of between 800,000 and 1,700,000 Hz to effect atomization and vaporization in air of a uniform concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.     
     
     
       11. A method according to claim 10 wherein said frequency range is about 1,700,000 Hz. 
     
     
       12. A method according to claim 10 wherein said frequency range is about 1,150,000 Hz. 
     
     
       13. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition consisting of the solution consisting of 1% DPC as an agent, a surfactant and water as a solvent; wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating at a frequency of about 1,700,000 Hz to effect atomization and vaporization in air of a uniform concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.     
     
     
       14. A method for killing insects and fungi on plants or in nearby air comprising the steps of: applying thereto an insecticidal or fungicidal effective amount of a composition consisting of the solution consisting of d-cis, trans-allethrin as an agent, said agent being less than about 25% by weight of said composition, and kerosene as a solvent; wherein said composition is applied by nebulization in an electromechanical ultrasonic transducer operating at a frequency of about 1,300,000 Hz to effect atomization and vaporization in air of a uniform concentration of said composition, the atomized and vaporized particles of said composition having a particle size in the range of 0.5 to 5 microns.